Introduction

This page provides a comprehensive analysis of the known insider trading history of Robert Nathaniel Martin. Insiders are officers, directors, or significant investors in a company. It is illegal for insiders to make trades in their companies based on specific, non-public information. This does not mean it is illegal for them to make any trades in their own companies. However, they must report all trades to the SEC via a Form 4. Despite these restrictions, academic research suggests that insiders - in general - tend to outperform the market in their own companies.

Average Trade Profitability

The average trade profitability is the average return of all the open market purchases made by the insider in the last three years. To calculate this, we examine every open-market, unplanned purchase made by the insider, excluding all trades that were marked as part of a 10b5-1 trading plan. We then calculate the average performance of those trades over 3, 6, and 12 months, averaging each of those durations to generate a final performance metric for each trade. Finally, we average all of the performance metrics to calculate a performance metric for the insider. This list only includes insiders that have made at least three trades in the last two years.

If this insiders trade profitability is "N/A", then the insider either has not made any open-market purchases in the last three years, or the trades they’ve made are too recent to calculate a reliable performance metric.

Update Frequency: Daily

See the list of most profitable insider traders.

Companies with Reported Insider Positions

The SEC filings indicate Robert Nathaniel Martin has reported holdings or trades in the following companies:

Security Title Latest Reported Holdings
US:MDC / M.D.C. Holdings, Inc. SVP and CFO 0
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by Robert Nathaniel Martin. Non-planned trade are trades that were not made as part of a 10b5-1 trading plan. The stock performance is charted as cumulative percent change in share price. For example, if an insider trade was made on January 1, 2019, the chart will show the daily percent change of the security to the present day. If the share price were to go from $10 to $15 during this time, the cumulative percent change in share price would be 50%. A change in price from $10 to $20 would be 100%, and a change in price of $10 to $5 would be -50%.

Ultimately, we are trying to determine how closely the insider’s trades correlate to excess returns (positive or negative) in the share price in order to see if the insider is timing their trades to profit from insider information. Consider the situation where an insider was doing this. In this situation, we would expect either (a) positive returns after purchases, or (b) negative returns after sales. In the case of (a), the PURCHASE chart would show a series of upwardly sloping curves, indicating positive returns after each purchase transaction. In the case of (b), the SALE chart would show a series of downward sloping curves, indicating negative returns after each sale transaction.

However, this alone is not enough to draw conclusions. If, for example, the share price of the company was in a non-cyclical climb over many years, then we would expect all the post-purchase plots to be upwardly sloping. Likewise, non-cyclical declines over many years would result in downward sloping post-trade plots. Neither of these charts would suggest insider trading activity.

The strongest indicator would be a situation where the share price was extremely cyclical, and there were both positive signals in the PURCHASE chart and negative plots on the SALE chart. This situation would be highly suggestive of an insider that was timing trades to their financial advantage.

Insider Trading History

This table shows the complete list of insider trades made by Robert Nathaniel Martin as disclosed to the Securities Exchange Commission (SEC).

File Date Tran Date Form Ticker Security Code 10b5-1 Shares Remaining Shares Percent
Change
Share
Price
Tran
Value
Remaining
Value
2024-04-19 2024-04-19 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
D - Sale to Issuer -35,000 0 -100.00
2024-04-19 2024-04-19 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
D - Sale to Issuer -534 0 -100.00
2024-04-19 2024-04-19 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
D - Sale to Issuer -47,338 0 -100.00
2024-04-19 2024-04-19 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
D - Sale to Issuer -227,435 0 -100.00
2024-03-01 2024-02-29 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
G - Gift -30,000 274,773 -9.84
2024-02-05 2024-02-04 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
F - Taxes -1,397 304,773 -0.46 62.74 -87,648 19,121,458
2024-02-05 2024-02-03 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
F - Taxes -7,232 306,170 -2.31 62.74 -453,736 19,209,106
2024-02-05 2024-02-03 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
F - Taxes -6,247 313,402 -1.95 62.74 -391,937 19,662,841
2024-02-05 2024-02-02 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
F - Taxes -15,313 319,649 -4.57 62.74 -960,738 20,054,778
2024-02-05 2024-02-02 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
A - Award 35,000 334,962 11.67
2023-07-28 2023-07-28 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
S - Sale -19,839 299,962 -6.20 49.94 -990,760 14,980,102
2023-07-28 2023-07-28 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
M - Exercise 19,839 319,801 6.61 21.40 424,555 6,843,741
2023-05-09 2023-05-09 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
S - Sale -13,226 299,962 -4.22 41.55 -549,540 12,463,421
2023-05-09 2023-05-09 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
M - Exercise 13,226 313,188 4.41 23.46 310,282 7,347,390
2023-02-06 2023-02-04 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
F - Taxes -1,397 299,962 -0.46 40.33 -56,341 12,097,467
2023-02-06 2023-02-03 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
F - Taxes -25,034 301,359 -7.67 40.33 -1,009,621 12,153,808
2023-02-06 2023-02-03 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
A - Award 64,800 326,393 24.77
2023-02-06 2023-02-03 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
A - Award 49,590 261,593 23.39
2023-02-06 2023-02-03 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
F - Taxes -6,248 212,003 -2.86 40.33 -251,982 8,550,081
2023-02-06 2023-02-03 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
F - Taxes -1,356 218,251 -0.62 40.33 -54,687 8,802,063
2022-02-04 2022-02-04 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
F - Taxes -1,402 219,607 -0.63 43.68 -61,239 9,592,434
2022-02-04 2022-02-03 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
F - Taxes -28,448 221,009 -11.40 46.69 -1,328,237 10,318,910
2022-02-04 2022-02-03 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
A - Award 64,800 249,457 35.09
2022-02-04 2022-02-03 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
A - Award 42,835 184,657 30.20
2022-02-04 2022-02-03 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
F - Taxes -1,360 141,822 -0.95 46.69 -63,498 6,621,669
2022-02-02 2022-02-01 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
F - Taxes -990 143,182 -0.69 46.24 -45,778 6,620,736
2021-08-13 2021-08-13 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
S - Sale -6,000 144,172 -4.00 52.28 -313,680 7,537,312
2021-08-13 2021-08-12 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
S - Sale -2,309 150,172 -1.51 52.25 -120,645 7,846,487
2021-04-30 2021-04-29 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
F - Taxes -30,723 152,481 -16.77 59.93 -1,841,229 9,138,186
2021-04-30 2021-04-29 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
A - Award 69,984 183,204 61.81
2021-02-05 2021-02-03 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
F - Taxes -830 95,967 -0.86 55.28 -45,882 5,305,056
2021-02-05 2021-02-04 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
A - Award 8,868 104,835 9.24
2021-02-03 2021-02-01 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
F - Taxes -944 97,482 -0.96 53.77 -50,759 5,241,607
2021-02-03 2021-02-02 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
F - Taxes -685 96,797 -0.70 55.16 -37,785 5,339,323
2020-08-18 2020-08-17 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
S - Sale -20,000 98,426 -16.89 46.11 -922,200 4,538,423
2020-08-04 2020-08-03 4 MDC M.D.C. HOLDINGS, INC.
Non-Statutory Stock Option (right to buy)
M - Exercise -12,247 0 -100.00
2020-08-04 2020-08-03 4 MDC M.D.C. HOLDINGS, INC.
Non-Statutory Stock Option (right to buy)
M - Exercise -9,185 0 -100.00
2020-08-04 2020-08-03 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
S - Sale -21,432 118,426 -15.32 44.98 -964,011 5,326,801
2020-08-04 2020-08-03 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
M - Exercise 12,247 139,858 9.60 28.46 348,550 3,980,359
2020-08-04 2020-08-03 4 MDC M.D.C. HOLDINGS, INC.
Common Stock $.01 Par Value
M - Exercise 9,185 127,611 7.76 17.10 157,064 2,182,148
2020-05-26 2020-05-23 4 MDC MDC HOLDINGS INC
Common Stock $.01 Par Value
F - Taxes -2,694 118,426 -2.22 32.47 -87,474 3,845,292
2020-05-07 2020-05-05 4 MDC MDC HOLDINGS INC
Common Stock $.01 Par Value
F - Taxes -28,215 121,120 -18.89 27.61 -779,016 3,344,123
2020-05-07 2020-05-05 4 MDC MDC HOLDINGS INC
Common Stock $.01 Par Value
A - Award 64,152 149,335 75.31
2020-02-04 2020-02-02 4 MDC MDC HOLDINGS INC
Common Stock $.01 Par Value
F - Taxes -1,520 76,577 -1.95 42.14 -64,053 3,226,955
2020-02-04 2020-02-01 4 MDC MDC HOLDINGS INC
Common Stock $.01 Par Value
F - Taxes -970 78,097 -1.23 42.14 -40,876 3,291,008
2020-02-04 2020-02-03 4 MDC MDC HOLDINGS INC
Common Stock $.01 Par Value
A - Award 8,606 85,183 11.24
2019-08-08 2019-08-07 4 MDC MDC HOLDINGS INC
Common Stock $.01 Par Value
F - Taxes -26,932 79,067 -25.41 36.75 -989,751 2,905,712
2019-08-08 2019-08-07 4 MDC MDC HOLDINGS INC
Common Stock $.01 Par Value
A - Award 61,236 105,999 136.80
2019-05-31 2019-05-31 4 MDC MDC HOLDINGS INC
Common Stock $.01 Par Value
S - Sale -7,000 44,763 -13.52 31.79 -222,530 1,423,016
2019-02-04 2019-02-01 4 MDC MDC HOLDINGS INC
Common Stock $.01 Par Value
A - Award 8,376 47,930 21.18
2018-05-08 2018-05-08 4 MDC MDC HOLDINGS INC
Common Stock $.01 Par Value
S - Sale -9,000 39,554 -18.54 31.91 -287,190 1,262,168
2018-02-05 2018-02-02 4 MDC MDC HOLDINGS INC
Common Stock $.01 Par Value
A - Award 6,872 48,554 16.49
2017-02-03 2017-02-02 4 MDC MDC HOLDINGS INC
Common Stock $.01 Par Value
A - Award 7,155 38,596 22.76
2016-01-27 2016-01-25 4 MDC MDC HOLDINGS INC
Common Stock $.01 Par Value
A - Award 4,847 29,946 19.31
2015-05-26 2015-05-23 4 MDC MDC HOLDINGS INC
Non-Statutory Stock Option (right to buy)
A - Award 15,000 15,000
2015-05-26 2015-05-23 4 MDC MDC HOLDINGS INC
Common Stock $.01 Par Value
A - Award 15,000 25,099 148.53
2015-05-26 3 MDC MDC HOLDINGS INC
Common Stock $.01 Par Value
20,490
2015-05-26 3 MDC MDC HOLDINGS INC
Common Stock $.01 Par Value
10,684
2015-05-26 3 MDC MDC HOLDINGS INC
Common Stock $.01 Par Value
20,490
2015-05-26 3 MDC MDC HOLDINGS INC
Common Stock $.01 Par Value
10,684
P
Open market or private purchase of non-derivative or derivative security
S
Open market or private sale of non-derivative or derivative security
A
Grant, award, or other acquisition of securities from the company (such as an option)
C
Conversion of derivative
D
Sale or transfer of securities back to the company
F
Payment of exercise price or tax liability using portion of securities received from the company
G
Gift of securities by or to the insider
K
Equity swaps and similar hedging transactions
M
Exercise or conversion of derivative security received from the company (such as an option)
V
A transaction voluntarily reported on Form 4
J
Other (accompanied by a footnote describing the transaction)